You've never seen swimming holes like these! We're on a mission to uncover the world's most secluded, sexy and extreme natural places to cool off. We'll hike, climb, boat and even dog-sled our way around the globe to track down the most amazing places to take a dip, jump off a cliff or explore underwater caves. From a crystal blue 100-foot waterfall buried deep in an Arizona Indian Reservation and the ancient Mayan underwater caves of Mexico to the country's oldest commercial quarry in Vermont and the only place on Earth where you can share your swim with a manatee, "" gives you the keys to unlock the adventure of a lifetime.

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